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???
01/10/05 11:04
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#84637 - Call it serial
Responding to: ???'s previous message
Oleg Sergeev said:
However it is different.

OK, but still fully usable for SPI (observing the timing constraints, of course).
The arrangement of '51 UART mode 0 when master transmitter (i.e. both edges occur during a valid data bit) enables to use SPI devices clocking in on any edge (again, timing should be checked).

Oleg Sergeev said:
It {the clock frequency} is defined as OSC/32 or OSC/64 depend on bit SMOD of PCON register.

No. This applies to UART Mode2.
Quoting from your own post:
Oleg Sergeev in #72516 said:
UART in mode 0 uses fixed clock ratio (OSC/12 or OSC/6 in x2 mode)



Oleg Sergeev said:
I do suggest to check all timings strongly before use such connection.

Full agreement.

Nevertheless, the '51 UART mode 0 is MASTER only.

Jan Waclawek




List of 6 messages in thread
TopicAuthorDate
serial communication between two ATC51            01/01/70 00:00      
   'Mode 0' uses RxD and TxD differntly!            01/01/70 00:00      
      no slave in mode 0            01/01/70 00:00      
         UART mode 0            01/01/70 00:00      
            Call it serial            01/01/70 00:00      
               indeed, it is osc/12            01/01/70 00:00      

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